Detachable grate bar construction for traveling grates



2 Sheets-Sheet R. L. BEERS Filed March 9, 1942 Nov. 28, 1944.

DETACHABLE GRATE BAR CONSTRUCTION FOR TRAVELING GRATES A D N E B J 4% NN n H r I n 0 H HI l3l |lll| -41.. ill I3 G F7 .||||h||||||h My IA c INVENTOR.

ROYCE L. BEERS mm ATTORNEY$ NOV. 28, 1944. s 2,363,932

' DETACHABLB GRA'I'E BAR CONSTRUCTION FOR TRAVELING GRATES Filed March 9, 1942 i 2 Sheets-Sheet 2 INVENTOR.

RQNGZET L. BEER S FIG 3 ORNEYS uNiTEDsTATEs Patented Nov. 28, 1944 PATENT FIC A nErAonABLnGRATEBAR eNsmecneN-.

, FOR TRAVELING GRA'IES j Royce L. Beers, Birmingham',Mich;, assigrioifto s Detroit Stoker Company, Monroe, Mich, a corlv porationof; Michigan Application March 9, 1942, Sig nonsense; I

6 Claims. (or. 110-401 The invention relatesqto traveling mtesof that type comprising a seriesvof lparallelly arranged transverselyextending individual grate barsyattached to a sprocket chain to travel therewithbetween and around spacedfsprocketwheels. It is usual, in such constructions, to provide for detaching thebars, as it is occasionally. necessary cipal stress willibe .carried j by suchbearing However, to normallyhold the pinfrom rearwarddisplacement, a washer Gis engaged with said pin outside thelug C,said Washer having alug G which engages the entrancefportion of the slotF.

The Washer .G is held position by asecond to replacethe same It is, also usual to attach the lbars to the chainfhy the samepivot, pins which connect the linkslof the chain witheach other. Consequently to removea banit is necessary to move the pivot pin axial1y,and because of the; tension on the chain, this-operation requires the application of cohsiderablelfo rce. ltjisthe 'object of the instant inventiontoi obtain a cons tructicn in which the grate bars: Inay befattached or detached fromthechain without the washer 1-1 and .cotter pinland will therefore pre- ,To prevent ,siftin if. an between adjacent grate 'bars, there, isja ledge [J above 1 the. lugs C andlextending thelength or thebar, whichledge necessity of any; axialdisplacement of thepivot 9 pins with respect tothe chain. links qwmchjthey connect. To this endthe invention consists in 1 the construction as hereinaf ter, set

1 Fig. .1 is a bottom planview'taken substantially on thelinel-lof Fig.2; m v

'Fig. 2 is a side elevation, with, parts broken away;

Fig. 3 is a sentence line3,3 of F 1 Fig. 4 is a section on line 4-4 of Fig. 3; and

Fig. 5 .is a perspectiveview of the: retaining means. i H

Asv illustrated, the traveling grate comprises a series of individual gratebars A, each having at its forward edge a depending flange B andspaced lugs C forward of thiswflange for embracing; the

propelling chain D and forming pivotal attachment thereto. The chain comprises a series of links D. pivotally connected to each other by pins E which latter extend beyond the links at oppo site ends for engagement with the lugs of the bars.

i As heretofore constructed, to attach or detach a ,bar from the chain, the pivot pin E must be axially displaced or, in certain constructions, completely detached. This I have avoided by the following construction: l r

The lugs C have formed therein angular or bayonet slots F open at the bottom and having the horizontal portion F thereof extending forwardly, These slots areof a width to receive projecting end portions of the pivot pins E and after said pins pass upward therein, arearward movement of the bar A will engage them with the portion F of the slot. This will form a half bearing for receiving the thrust of the pin, and as the chains travel forward and frictional resistance opposes movement of the bars, the prining entrance slot therefor, means for holding said longitudinal displacement.

orcement for the lugs. Cjgwhich compensates for l The pivot pin E is' preferablyjof uniform diam eter throughout its length. yr; is non-'rotatively fflxed position in one of the links D byproviding itwith a transverselyextendingsmall aperture K inwhich is drivcmajpin L. The link D has a hub portionl' 'g'provided with a channel I for engagingtheprojecting'portionof the pin L 1 and thus holdingitfagains't rotation. [The cotter -l pin I'isarranged at the opposite end of the pin E, and when engaged, war h'o'id said pinagainst with the construction asde'scribed, whenever it is desired to remove ,a grate bar, itis only necessary to first detach the washers G, after which the bar may be moved forward to permit the pinE to travel rearward inthe horizontal portion F of the slot F. The bar is then free to i be lifted, the/pin E disengaging through the vertical portion of the slotF. i What I claim as my invention is: l

a 1. In a travelinggrate, the combination with a series of adjacent grate bars anda propelling chaintherefor extending transversely and intermediate the ends thereof, of means for detachably connecting a grate bar to said chain comprising a pin projecting laterally from saidchain, a lug depending from said bar having a bearing for receiving the forward thrust of said project? ing in and provided with a rearwardly extend lug against endwisemovementon said pin and detachable means forfholdingsaid bearing in.

engagement withsaid pin. v i i l l 2. In a traveling grate, the combination with a series of adjacent grate bars and a propelling chain therefor extending transversely andintermediate the ends thereof, of means for detachably connecting a grate bar to said chain com- 1.

prising a pin projectinglaterally from said chain, a i it i chain therefor extending transversely and inter mediate the ends thereof, said chain being formed of a series of links and pivotpins connecting the same, of means for detachably connecting a grate bar to said chain without displacement of said pivot pins in said links comprising opposite end extensions of said pivot pins, spaced lugs depending from said bar embracing said chain, each of said lugs being provided with a bearing for receiving the forward thrust of a pin and having an entrance slot extending rearward and downward, means for holding said pin against endwise movement in said lugs, and means detachably mounted on one of the extensions of said pin for holding the same against disengagement from the'adjacent lug.

4. In a traveling grate; the combination with a series of adjacent grate bars and a propelling chain therefor extending transversely and intermediate the ends thereof, said chain being formed of a series of links, and pivot pins connecting said links, of means for detachably connecting each of said grate bars to said chain comprising 0pposite end extensions of a pivot pin, spaced lugs depending from said bar and embracing a link of said chain, each lug being provided with a bearing for receiving the forward thrust of said pin and having an entrance slot extending rearward and downward therefrom, means for holding said pin against endwise movement in said lugs, and a washer detachablymounted on said pin having a projecting lug engaging the entrance slot of an adjacent depending lug to hold the pin from disengagement from the bearing.

5. In a travelinggrate, the combination with a series of adjacent grate bars and a propeller 1 chain therefor formed of a series of links, of pivot pins connecting said links eachof uniform diameter throughout its length and being of a length greater than the width of said links, one of each pair of links being provided with a radially extending recess therein, a smaller pin projecting laterally from each of th aforesaid pins links of said chain, each of said lugs being provided with a bearing for receiving the forward thrust of said pivot pin and having an entrance slot extending rearward and downward therefrom a washer sleeved upon an end portion of each of said pivot pins and provided with a lug for engaging said entrance slot of the adjacent depending lug to hold the pin from disengage ment from said'bearing, and a" cotter pin for holding said washer from disengagement. a

6. In a traveling grate, the combination of a series of'adjacent gratebars and a propeller chain therefor extending transversely and intermediate the ends thereof,"said chain being-formed of a series of links and pivot pins connecting the same, means for detachably connecting each grate bar to'said chain without displacement of said pivot pinsin said'linkscomprising opposite end extensions of said pivot pins, spaced lugs depending from saidvbar and embracing said chain, each of said lugs being provided with a 'bearing for receiving the forward thrust of a pin and having an entrance slot extending rearward and downward, means for holding said pin against endwise movement in said lug, means detachably mounted on one of the extensions of said pin for holding the same against disengagement from the adjacent lug, and a ledge'on each grate bar above said lugs to reinforce the same,

said ledge extending extending the length of the bar and underlapping the rear edge Portion of the next forward bar to prevent sifting of fuel between said bars.

t ROYCE L. BEERS." 

